We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
LaNiO Infiltration of Plasma-Sprayed LSCF Coating for Cathode Performance Improvement.
- Authors
Li, Ying; Zhang, Shan-Lin; Li, Cheng-Xin; Wei, Tao; Yang, Guan-Jun; Li, Chang-Jiu; Liu, Meilin
- Abstract
Perovskite-structured (LaSrCoFeO) LSCF has been widely studied as a cathode material for intermediate-temperature solid oxide fuel cells. However, the application of LSCF cathode is likely to be limited by its sluggish surface catalytic properties and long-term stability issues. Oxygen hyper-stoichiometric LaNiO with KNiF structure exhibits higher catalytic properties, ionic conductivity, and stability in comparison with LSCF cathode. Due to the good chemical compatibility of these two cathode materials, it is possible to prepare a composite cathode by the infiltration of LaNiO in the porous LSCF. This composite structure fully utilizes the advantages of the two cathodes and enhances the LSCF cathode performance. In this study, the LSCF cathode was deposited by using an atmospheric plasma spray technique, and the porous LSCF cathode was then infiltrated by LaNiO. The atmospheric plasma spray technique was used to reduce the SOFC manufacturing cost. The microstructure of coatings was characterized by SEM and EDS. The cathode polarization resistance was found to decrease by ~40% after the LaNiO infiltration. Also, the activation energy decreased from 1.53 to 1.40 eV.
- Subjects
CATHODES; LANTHANUM oxide; SOLID oxide fuel cells; ELECTRON tubes; FUEL cells
- Publication
Journal of Thermal Spray Technology, 2016, Vol 25, Issue 1/2, p392
- ISSN
1059-9630
- Publication type
Article
- DOI
10.1007/s11666-015-0369-1